In one case basically it would be all Canadians suffering through the economic shock, or in a different instance it would be all taxpayers through the government. In this instance the bail-in actually aims at only having those who have contracted some form of long-term debt security with the bank, and they should actually have been aware of the risk of actually doing this. So the risk is limited to them.
On May 18th, 2016. See this statement in context.